Effect of alpha radiation on the leaching behaviour of nuclear glass

Irradiation Impact on the Leaching Behavior of HLW Glasses

“…These irradiation conditions were shown to simulate correctly the variation of macroscopic properties induced by alpha decays. Short leaching tests were performed to evaluate the effect of radiation on the initial alteration rate [Peuget et al (2007)]. Gamma irradiation of inactive glasses by 60 Co sources have been used to focus on electronic effects occurring during gamma transitions, beta and alpha decays, as the main interaction mode is dominated by Compton diffusion.…”

“…This study focuses on the alpha radiation effects as it is the main contributor on the R7T7 glass after a three hundred year period [Peuget et al (2007)]. …”

Long-term aqueous alteration kinetics of an alpha-doped SON68 borosilicate glass

“…It was elaborated at 1160°C for 3 h 20 min, then annealed for one hour at 525°C and cooled at a rate of less than 50°C·h -1 . The glass, whose chemical composition is detailed in previous papers [11][12], contains 0.85 wt% of 239 PuO 2 . At the beginning of the leach test, its alpha activity (5 × 10 7 Bq·g -1 ) was representative of R7T7 glass after around 1000 years [12][13].…”

“…Despite the numerous studies carried out to assess the impact of radiation on nuclear glass leaching behavior [4][5][6][7][8][9][10][11][12], even on alpha-doped glasses [7,[10][11][12], no data are available specifically concerning the residual rate stage. In this study, we thus focus on the effects of alpha radiation on the residual rate and actinide behavior.…”

Reactions between water and vitreous silica during irradiation

“…Unfortunately, the results from these experiments have often yielded contradictory results ranging from irradiation increasing dissolution rates [5][6][7] to having negligible effects [8][9][10][11], underscoring the need to explore how radiation damage affects the interactions between water and glass at a more fundamental level.…”